Electric cut-out.



T. E. MURRAY. ELECTRIC CUT-OUT. APPLICATION FILED NOV. 20, 1911 1,023,326. Patented Apr. 16, 1912.

. 2 SHEBTSSHEBT l.

l I I i I i T. E. MURRAY. ELECTRIC CUT-OUT. APPLIGATION FILED NOV. 20, 1911 Patented Apr. 16, 1912.

THOMAS "MURRAY, 01 YGEK, N.

ELECTRIC CB T-QUT.

Application filed November 530, 1911.

g; concern THOMAS E, lllnmniy, zuted Fitates, residing ccnnt of New York. and Olfli, have invented. a certain :s, of which the following is a specie} ion relates to electric cutouts, oeially designed for use with of, for example, 1000 am.

\ explained, whereby the contors in the device given onai area; whereby all of the her including fuses or not) be of fined. contacts, which criminals on the base block,

or disconnected simulal Wherehy each ,y examined, and crrrent across the t is prevented drawings-l l are 1 my cat-out l section on the line is similar section e fuse removed m-celain or other insnvrial. and comprises 111- X slits 2, 5, longitudinal partn partitions 5, (3, where [we are orodnced, A, B, J, I), E, c on each side of the block. The nudlongitudinal partition 4; extends above the other partitions and end walls, for a .1 together Specification of Letters Patent,

useful improvement in Electric Patented Apia '16, 1912,

Serial No. 661,328.

' by a screw bolt 9, countersunk on the under side oi" the base. To said horizontal per tions are secured by bolts 10, the terminals of the service conductors 11, 12, 13, 14, 15, 16 of a three-wire system; 11 and 142 being the positive; 12, 15 the neutral, and 13, 16 the negative lead. The vertical portions of each pan-cf plates 7, 8 are separated by a space.

Resting on the base 1 is a cover plate 17, of porcelain, the ends 18 of which extend beyond the end walls 2, 3, so that said plate can be conveniently handled. On the upper side of said plate is a longitudinal rib 19, having three notches for the reception of the fuse striy'is, one of which is shown at 2Q, Fl 1 and 2. T he ends 0; each ttnse strip are connected by bolts 21 to the members oi? a pair of metal contact plates 2.1, 23. plate is bent in loop term to fit an edge f the cover plate 17, and then the plate bent again at right angles so as to extend vertically downward to enter the space between the contact plates 7, 8 on the base, which space said plate closely tits.

in theportions of the cover plate whicl'i are Werlapped by the loops of the plates 22, 23, are made openings, in which are inserted metal rods ill before the plates 22, 23 are putin place, said rods establishing; electrical connection between the arms of said loops. The pie 22, 23 are secured to the cover plate by Midbolts ill which, as already stated, serve to connect the ends of the fuse strip to said plates. ll hen the cover plate 17 is adjusted in place, the vertical portions of plates 22, 23 enter all the spaces between the plates 7, 8, so that the tlllOQ'fUSOS are thus simultaneously connected in circuit and term parts of the bridges between the mom-- bers of the pairs o't terminals ll, 14, 12, 15 and 13, 16.

Three sen'iicylindrical covers 25, 26, 27, are placed upon the plate 17 and protect the several fuse strips. The end covers 25 and 27 have recesses in their inner walls, and the middle cover 26 recesses in both walls, to receive the rib 19, as shown in dotted lines, Fig. 1, On the base block are fixed standards 28, having openings 29, 30. In order to secure both the cover plate 1'? and the fuse corers 27 2U, 27 in place, a headed rod 31 is passed through the upper openings 25) in standards :38, and secured by a padlock, or other seal device,32,theshacl lc of which passes through an aperture near the end of said rod.

The fuses may all be removed simultaneusly by taking plate 17 off the base block,

an-d, if desired, bifurcated metal bridges may be substituted, as shown in Figs. 3 and 5. Another plate, 33, similar to plate 17, has a groove on its under side which receives three bifurcated bridge plugs, (one of which is shown at 3 Fig. secured in place by screws, (one shown at 35). Said plugs enter between the plates 7, 8, and bridge the pairs of terminals 11, 1 1, 12, 15 and 13, 16. In order to secure the plate 33 in place, the rod 31 is passed through the lower openings 30 in standards 28, and secured, as already described.

The construction above described is especially devised to afford large areas of conductor in the device, and thus to adapt it for its use with heavy currents. The plates 7, 8 extend upward to the level of the upper surface of the base block. The outer plate of each pair then lies snugly in the angles of the bent plates 22 and 23: thus affording a large area of conductors in close contact; In order to prevent jumping of current between the inner plates of said pairs, the longitudinal partition 4: in the base block is carried above the upper extremities of said plates, and is received in a groove incthe under side of slab 17, Fig. 2, or in the loop of the bifurcated plug 3 t, Fig. 3. The inserted rod 24, extending between the loop arms of plates 22, 23, also increases the conducting area of said plates. The covers 25, 26, 27 may be removed separately, so that any fuse may be examined or replaced without exposing the others.

I claim:

1. An electric cut-out, comprising a base block, having a plurality of pairs of recesses, contacts in said recesses, a substantially fiat removable cover plate for said block extending over said recesses, a plurality of pairs of contacts depending from said plate and cooperating respectively with the contacts in said recesses, and fuses on the upper side of said plate, the terminals of each fuse being connected to a pair of said depending contacts.

2. An electric cut-out, comprising a base block, having two recesses, contacts in said recesses, a cover plate for said recesses, a pair of contacts on said plate, each member of said pair of contacts being formed with a U-shapcd loop receiving an edge of said plate, and 'a depending projection cooperating with a contact in one of said recesses,

and on the upper side of said plate a fuse having its terminals connected to the upper legs of said loops.

3. An electric cut-out, comprising a base the upper side of said plate a fuse having its terminals connected to the upper legs of said loops, and a connection extending through said cover plate and electrically uniting the arms of said loop.

1. An electric cut-out, comprising a base block, having two recesses, cont-act plates in said recesses extending to the tops thereof, a cover plate for said recesses, a pair of bentcontacts on said plate, each of said bent contacts cooperating with a face and the upper edge of one of said recess contact plates, and on the upper side of said cover plate a fuse having its terminals connected to said bent contacts.

5. An electric cut-out, comprising a base block, a plurality of pairs of contacts thereon, a substantially flat removable cover plate for said block, having a rib on its upper surface, a plurality of fuses on said plate extending over said rib, and pairs of contacts on said plate connected to the fuse terminals and respectively cooperating with said block contacts.

6. An electric cut-out, comprising a. base block, a plurality of pairs of contacts thereon, a removable cover plate for said block, a plurality of fuses on said plate, a cover for each fuse, means for securing said covers to 'said plate, and pairs of contacts on said plate connected to the fuse terminals and respectively cooperating with said block contacts.

7. An electric cut-ont, comprising a base block, a plurality of pairs of circuit terminals thereon, a removable cover plate for said block having a rib on its upper surface, and on said late a plurality of U-shaped bridges CXtUIlt ing over said rib, each bridge having its arms cooperating with the members of a pair of terminals.

8. An electric cutout, comprising a base block, a plurality of pairs of upwardly projecting contacts thereon, a partition of insulating material on said block extending between and above the members-of-said pairs of contacts, a removable cor erplate for said block, and on said plate a plurality of U- shaped bridges receiving said partition be tween their arms, and each bridge having its arms cooperating with the members of a pair of said upwardly projecting contacts.

9. An electric cut-out, cou'iprisiug a base block, a plurality of pairs of upwardly pro jecting contacts thereon, a removable partition of insulating material seated in said block, and extending between and above the members of said pairs of contacts, a removable cover plate for said block, having a channel on its under side receiving said partition, and on said plate a plurality of bifur- (rated bridges receiving said partition between their arms, and the arms of each 10 bridge cooperating with the members of a pair of said upwardly projecting'contaets.

In testimony whereof I have allixed my signature in presence of two witnesses.

THOMAS E. MURRAY.

Witnesses GEn'rnUnE T. PORTER,

MAY T. MCGARRY. 

